39997244 has 12 divisors (see below), whose sum is σ = 79994544. Its totient is φ = 17141664.

The previous prime is 39997241. The next prime is 39997247. The reversal of 39997244 is 44279993.

39997244 = T₃₃₇₇ + T₃₃₇₈ + ... + T₃₃₈₃.

39997244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39997241) and next prime (39997247).

39997244 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714209 + ... + 714264.

It is an arithmetic number, because the mean of its divisors is an integer number (6666212).

Almost surely, 2^39997244 is an apocalyptic number.

It is an amenable number.

39997244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39997244 is a wasteful number, since it uses less digits than its factorization.

39997244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428484 (or 1428482 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 39997244 is about 6324.3374356528. The cubic root of 39997244 is about 341.9873346654.

The spelling of 39997244 in words is "thirty-nine million, nine hundred ninety-seven thousand, two hundred forty-four".